Columbus Circle

Abigail Clayton lives alone. Very alone. In fact, the attractive heiress has not left her Manhattan loft apartment for almost two decades.

The famous daughter of a wealthy industrialist, Abigail disappeared from the prying eyes of the press and the intrusiveness of her family on her 18th birthday, the day she received her massive inheritance. During years of self-imposed isolation, Abigail has had contact with only two people — her building's Concierge, Klandermann, with whom she communicates via notes — and Dr. Raymond Fontaine, a longtime family friend and her sole confidant for most of her life.

When the death of her elderly neighbour prompts NYPD Homicide Detective Frank Giardello to launch an investigation, the agoraphobic Abigail is distressed to find him outside her door, asking to question her.